Yes, really. There's a  very good reason why Shadowgift was hard to aquire. Dark magic is exceptionally powerful for the levels that it requires to wield the tomes that make it up. 

Additionally, the lore behind how dark magic works states it to be an art that requires years of practice and focus. Thus suddenly discovering "oh, I can dark magic now no problem " is rather distasteful and ignorant. 

Does that make sense?